Solbari UPF 50+ Women's Sun Protection CoolaSun Base Layer - UV Protection, Sun Protective Designed, tested and rated UPF50+ in Australia and made of micro-nylon and spandex. Super lightweight, moisture wicking, breathable and quick dry Discrete thumbholes (hand covers) to protect the back of the hands. Recommended by medical experts to maintain a healthy skin. 91% micro-nylon, 9% spandex Machine washable (cold cycle, 30 degrees). Do not tumble dry. Hang to dry.